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Finding the Fourth Proportional to 101,329.28, 151,910.40 and 76,321.28

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Solution

The fourth proportional to 101,329.28, 151,910.40 and 76,321.28 is: 114,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,329.28 : 151,910.40 = 76,321.28 : x
  2. Step 2: Convert to fraction form
    101,329.28/151,910.40 = 76,321.28/x
  3. Step 3: Cross multiply
    101,329.28x = 151,910.40 × 76,321.28
  4. Step 4: Simplify right side
    101,329.28x = 11,593,996,173.31
  5. Step 5: Solve for x
    x = 11,593,996,173.31/101,329.28
  6. Step 6: Final answer
    x = 114,419.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.